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Stephen M Kavic

Publications and source records attributed to Stephen M Kavic.

11 recordsLinked to original sources
PubMed2005

Laparoscopic splenectomy: what barriers remain?

Conditions that once were considered either relative or absolute contraindications for laparoscopic splenectomy have become fewer and less significant in the overall assessment of candidates for this procedure. Advances in surgical technique, operative conduct, and instrumentation have made it feasible to perform splenectomy laparoscopically with good outcomes and minimal morbidity in a variety of different pathologic conditions. Obesity, malignancy, pregnancy, and splenomegaly are assessed here in detail.

Contraindications↗
PubMed2005

Management of gastroesophageal reflux disease: medications, surgery, or endoscopic therapy? (Current status and trends).

Gastroesophageal reflux disease (GERD) is a common chronic disorder in the Western world. The basic cause of GERD has been well characterized--the fundamental defect is a loss of integrity of the gastroesophageal barrier. What is less clear is the most appropriate means of addressing this reflux. GERD has a variety of symptoms, ranging from typical presentations of heartburn and regurgitation (without esophagitis) to atypical presentations, such as severe erosive esophagitis and its associated complications. Because of its symptomatic diversity, physicians may select from a variety of therapeutic approaches. Medical therapy aims at decreasing acidity by suppressing proton secretion and has been well established. Available medications include antacids and alginates, H2-receptor antagonists, motility agents, and proton pump inhibitors (PPIs). Antireflux surgery, commonly performed laparoscopically, aims at reinforcing and repairing the defective barrier through plication of the gastric fundus. The earliest performed successful procedures were the Nissen and Toupet fundoplications, to which several modifications have since been made. It has been demonstrated in preliminary studies and long-term outcomes of such open surgery and preliminary studies of such laparoscopic surgery that antireflux surgery is an effective approach, with overall outcomes superior to those achieved with medications. The precise indications for the surgical treatment of patients with GERD, however, remain controversial. In recent years, endoscopic intraluminal antireflux approaches have attracted the attention of physicians, surgeons, and commercial companies, especially after the approval of two endoscopic intraluminal methods by the United States FDA in 2000. The common element is prevention of acid reflux by construction of a functional or controlled barrier in the lower esophageal sphincter zone. Three main methods are currently employed: endoscopic intraluminal valvuloplasty, endoscopic radiofrequency therapy, and endoscopic injection or implantation of foreign material. The endoluminal suturing method is highly demanding technically, and its short-term results are encouraging, although largely dependent on the experience of the endoscopist. Several prospective cohort studies have shown that the radiofrequency procedure (Stretta) significantly improves GERD symptoms and quality of life while reducing esophageal acid exposure and eliminating the need for antisecretory medications in the majority of patients within 6-12 months. Most recently, some researchers have studied the endoluminal implantation of polymers, such as Plexiglas (polymethyl-methylacrylate), Gatekeeper hydrogel, and Enteryx (ethylene vinyl alcohol copolymer). The preliminary results of these studies showed that the implantation method was feasible and safe; however, the only multicenter trial related to outcome that has been published has included just 1 year of follow-up. Here, we review the treatment of GERD: medical, surgical, and endoscopic. In addition, we provide an algorithm based on symptoms and response to treatment for management of these patients.

Algorithms↗
PubMed2004

Assessment and management of the geriatric patient.

OBJECTIVE: To describe the potential critical care problems that arise as a result of aging and to identify some of the methods that may be used to minimize these problems. DATA SYNTHESIS: The population of the United States is aging. This is reflected in the age of our surgical patients. Aging is associated with myriad physiologic changes and an increased susceptibility to disease, all of which renders older patient more susceptible to the negative sequela of anesthetic and surgical stress. Minimizing the effects of aging begins preoperatively by assessing the impact of these changes on the individual patient. Once deficits are identified, efforts can be made to correct what is correctable preoperatively and to address what is not by designing an intra- and postoperative plan that limits additional stress to the compromised system. Although good data regarding optimal perioperative management of the elderly patient are presently lacking, awareness of the areas of potential vulnerability allows the anesthesiologist and surgeon to design their treatment plans with these limitations in mind. CONCLUSION: By identifying the limitations imposed by aging, critical care problems in elderly patients can be anticipated and addressed, and surgical outcomes can be improved.

Aged↗
PubMed2003

The role of advance directives and family in end-of-life decisions in critical care units.

PURPOSE: To define the extent and nature of the End-of-Life (EOL) decision-making process in critically ill patients. MATERIALS AND METHODS: Retrospective review of all deaths in adult medical and surgical intensive care units of a tertiary care hospital over a one-year period. RESULTS: There were sixty-one deaths in the study period. The mean age was 68 years, and 30 patients (49%) were female. Nearly one-third of patients had advance directives: eight patients presented advance directives on hospital admission, and 10 families produced advance directives at EOL. Seventy-six percent were admitted to the ICU as Code I (full care) and 24% were Code II (selective modification of care). At EOL, 10 patients were Code I, 14 were Code II, and 38 were transitioned to Code III (comfort care only). In the Code III population, the change in code status was initiated by the family in 12 cases. CONCLUSIONS: In a substantial number of instances transitioned to comfort care at EOL, the family initiated the code-status change. Interestingly, in several cases the family initially withheld advance directives. Critically ill patients and their families are assuming an active role in EOL care.

Aged↗
PubMed2002

Renal artery to inferior vena cava fistula following gunshot wound to the abdomen.

Traumatic fistula involving the renal artery and IVC is a rare event, and typically is a result of penetrating injury. A case of right renal artery to IVC fistula following a gunshot wound to the abdomen is reported, and illustrates the significant hemodynamic changes that accompany these fistulae. We also emphasize the importance of thorough initial exploration of retroperitoneal hematomas following penetrating trauma, and review management options in the treatment of renal arteriovenous fistulae.

Abdominal Injuries↗
PubMed2002

Hepatobiliary nutrition: history and future.

The liver is a master metabolic gland; consequently, liver disease commonly results in significant malnutrition. Complex metabolic derangements always accompany liver failure, often reflect the magnitude of hepatic insufficiency, and are characterized by accentuated catabolism. Nutritional assessment is problematic in these patients, because many of the usual indicators of nutritional status are altered directly by the hepatic pathophysiology rather than, or in addition to, preexisting or subsequent secondary malnutrition. The objective of nutritional support in patients with liver failure is to provide adequate nutrients to ensure the availability of specific substrates for energy and protein synthesis and for normal hepatocyte survival and function, without inducing or accentuating encephalopathy or otherwise compounding hepatic insufficiency. In the near future, guidelines must be developed for the specific nutritional support of patients with fulminant hepatic failure, cholestatic liver disease, steatosis, and cirrhosis. Currently, work is underway to develop an artificial liver for patients awaiting transplantation; to use genetic engineering technology to provide an alternative source of hepatic tissue; and to test the utility of various intermediary metabolites for hepatobiliary nutrition support. No ideal regimen for nutritional support of all forms of liver failure exists, and this also represents a significant challenge for future basic and clinical investigations. However, it is mandatory to attempt to maintain optimal nutrition in patients with severe liver failure if morbidity and mortality are to be reduced and survival is to be maximized.

Chronic Disease↗
PubMedDate not supplied

Rectocele.

Explore the source record for details and available documents.

Journal Article↗
PubMedDate not supplied

Adhesions and adhesiolysis: the role of laparoscopy.

BACKGROUND: Adhesions commonly result from abdominal and pelvic surgical procedures and may result in intestinal obstruction, infertility, chronic pain, or complicate subsequent operations. Laparoscopy produces less peritoneal trauma than does conventional laparotomy and may result in decreased adhesion formation. We present a review of the available data on laparoscopy and adhesion formation, as well as laparoscopic adhesiolysis. We also review current adjuvant techniques that may be used by practicing laparoscopists to prevent adhesion formation. DATABASE: A Medline search using "adhesions," "adhesiolysis," and "laparoscopy" as key words was performed for English-language articles. Further references were obtained through cross-referencing the bibliography cited in each work. DISCUSSION: The majority of studies indicate that laparoscopy may reduce postoperative adhesion formation relative to laparotomy. However, laparoscopy by itself does not appear to eliminate adhesions completely. A variety of adjuvant materials are available to surgeons, and the most recent investigation has demonstrated significant potential for intraperitoneal barriers. Newer technologies continue to evolve and should result in clinically relevant reductions in adhesion formation.

Humans↗
PubMedDate not supplied

Laparoscopic management of complex Crohn's disease.

BACKGROUND: Although the technical feasibility of laparoscopic management of Crohn's disease has been described, it remains of limited perceived usefulness in the management of surgically complex Crohn's. Successful management of such disease by using minimal access techniques is described. PATIENTS AND METHODS: Seventeen patients underwent laparoscopically assisted procedures to address clinically complex disease. Goals of the laparoscopic phase included mobilization of pertinent structures, localization of disease, and precise selection of incision location. Clinical situations encountered included fistulas, multipleor long-segment disease, abscesses, and reoperative management. RESULTS: Conversion to completely open procedures was not necessary in any case. Operative time was longer in complex Crohn's disease than in concurrently managed patients who underwent laparoscopic ileal/cecal resection for limited disease (244 +/- 18 vs 127 +/- 5 minutes, P < 0.05). Management of long-segment or multi-segment disease was associated with the longest operative times (292 +/- 36 minutes). Length of hospitalization was also longer than after management of limited ileal disease (7.1 +/- 1.4 vs 4.5 +/- 0.4 days). Major complications occurred in 18%. CONCLUSIONS: Laparoscopic techniques can be applied to complex Crohn's disease with effective disease management. In patients who may require multiple procedures, maintenance of abdominal wall integrity should be of significant value.

Adult↗